I have a 1980 O'Day 25. There are two separate electrical connections at the mast base that are corroded. I rewired the lights in the mast (standard mast light and an after the fact set of spreader mounted deck lights). But I wish to combine the two thru deck fittings into one (they inconveniently mounted one near where the mast step pin needs to come out).The problem is that I can't get easily access to the original through deck wiring that goes through the liner near the bulkhead. Any suggestions on how to access the wire in the liner and get another wire set into that area??Thanks,sPk